Railway-track drill



2 SheetsSheet 1.

(No Model.)

A. R. PAULUS.

RAILWAY TRACK DRILL.

Patented May 20, 1890.

r T "i (No Model.) 2 Sheets-Sheet 2. A. R. PAULUS. RAILWAY'TRAGK DRILL.

No. 428,516. Patented May 20, 1890.

, this base-plate rise the standards B, formed through the parallelportions of the plate or AARON R. PAULUS, OF VILLISCA, IOWVA.

RAILWAY-TR ACK DRILL.

SPECIFICATION forming part of Letters Patent No. 428,516, dated May 20,1890.

Application filed March 13, 1890. Serial No. 343,766. (No model.)

To aZZ whom it may concern:

Be it known that I, AARON R. PAULUS, a citizen of the United States,residing at Villisca, in the county of Montgomery and State of Iowa,have invented certain new and useful Improvements in Railroad-TrackDrills; and I do hereby declare that the following is a full, clear, andexact description of the same, reference being had to the annexeddrawings, makinga part of this specification, and to the letters ofreference marked thereon.

This invention relates to certain new and useful improvements inrailroad-track drills; and it has for its object, among others, toprovide a simple and efficient device for the purpose of boring therails and for permitting the throwing back of the clutch-arms which holdthe device to the rail during its operation to let the train pass, andthen readily thrown into place again.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which Figure 1 is a vertical longitudinal sectionthrough my improved machine. Fig. 2 is a horizontal section on the liney y of Fig. 1. Fig. 3 is a vertical section 011 the line :1: m ofFig. 1. Fig. 4 is avertical section on the line 2 z of Fig. 1.

Like letters of reference indicate like parts throughout the severalviews.

Referring now to the details of the drawings by letter, A designates asuitable baseplate, adapted to rest upon the ground and be held there inany suitable manner. From with or to which is rigidly secured thesubstantially U -shaped frame 0, the ends of which extend to the rear ofthe standards, as shown clearly in Fig. 2. Between these standards andbetween the parallel bars of the frame 0 there is supported a slottedplate or parallel arm A, between which works the ratchet-wheel B, saidwheel being threaded upon the shaft 0, which is also passed arms A, asSeen best in Fig. 1. This shaft at its inner end is connected with thetool-holder D by means of a swivel-connection a, as seen best in Fig. 1,so as to allow the said toolholder to revolve independent of the saidshaft. This tool-holder at its other end is suitably supported in thecross-bar of the frame 0, as shown best in Fig. 2, and at its end isprovided with any well-known means for holding the drill or other toolD, as shown in Figs. 1 and 2.

The tool-holder D is provided with a longitudinal slot Z), as seen bestin Figs. 2 and 3, and E is a bevel-pinion carrying a cam or eccentric E,as seen best in Fig. 3, the said eccentric being provided with a pin 0,which Works in the longitudinal slot of the toolholder, as seen in Fig.3. The inner face of thisbevel-pinion has a washer cl, as seen in Fig.1, and F is a stay-rod connecting the two parallel portions of the frameand bearing on this washer, as shown in said Fig. 1, to prevent endwisedisplacement or movement thereof and of the pinion.

Rising from the f rame C, and pivotally connected therewith, as at e,are the uprights G, connected at their upper ends by the crossbar f andat a short distance from the top by the cross-bar g, as seen best inFig. 3. Suitably journaled near the upper ends of these uprights is thecross-shaft H, provided with crank-handles upon the ends, which endsextend outside the uprights, as shown in Fig. 3, and on this shaft is abevel-pinion I, which meshes with the bevel-pinion I, which is carriedby the upper end of the vertical shaft J, which has bearings in thecross-bar g and in the cross-bar g, connecting the uprights near theirlower ends, as seen in Fig. 3. Thelower end of this vertical shaftcarries a bevelpinion K, designed to mesh with the bevelpinion E on thetool-holder, as seen in Figs. 1 and 3.

L are hooked arms pivotally connected to the side bars of the frame 0and connected with the uprights by means of the springs K.

M are jointed arms or toggles, pivotally con,- nected at one end to theextended ends of the side bars of the frame G, and at the other endpivotally connected to the uprights, as shown, being hinged near theirlongitudinal centers, as seen best in Fig. 1. A cross-bar 1 is providedat the joint to strengthen the same.

N is a rock-shaft extending lengthwise of the frame and supported insuitable bearings therein, and at its forward end'this rock-shaftcarries an arm 0, which is rigid thereon, and has its free end arrangedin the path traversed by the cam E, so that as the said cam revolves onits shaft the said arm is moved, and upon the opposite end of thisrock-shaft there is an arm P, the upper portion of which carries apivoted pawl N, designed to engage the teeth of the ratchet-wheelB', asseen best in Figs. 2 and 4, the other end of the said arm beingconnected with the frame by a spring 0 to normally keep the pawl fromengagement with the ratchet-wheel. The shaft 0 is provided with alongitudinal slot 70, in which works a pin Z on one of the cross-bars A.

In operation the parts are in the position in which they are representedby full lines in Fig. 1, the drill there being shown as just about actinon the rail. The rotation of the shaft H causes the bevel-pinion Ithereon to revolve, and this meshing with the bevelpinion I on the shaftJ conveys motion to the bevel-pinion K, which in turn imparts motion tothe tool-holder, and as the cam revolves it imparts motion to the pawl,which at each revolution of the cam turns the ratchetwheel one tooth. Asthe ratchet wheel turns, it, engaging the threads of the screw-shaft C,revolves the said shaft and advances the drill toward the rail. Thereverse movement withdraws the drill. Should it happen that while a holeis being drilled a train should come along, all that is necessary to dois to breakthe joint in the toggles M and throw back the parts into theposition in which they are shown by dotted lines in Fig. 1, leavingthedrill still in place, so that the work may be at once resumed afterthe train has passed by simply throwing the parts back into the positionin which they are represented by full lines in said Fig. 1.

The slots in the tool-holder and shaft 0 permit longitudinal movement ofthe said parts, and yet hold the wheels thereto.

WVhat I claim as new is 1. The combination, with the drill, of theoperating mechanism therefor and pivoted holding-arms constructed to bethrown back with a portion of the operating mechanism. as set forth.

2. The combination, with the frame and the drill-holder, of thescrew-shaft and intermediate devices for revolving said shaft by themovement of the drill-holder,as set forth.

3. The combination,with the frame and the drill-holder, of thescrewshaft, the ratchetwheel thereon, a pawl engaging the said wheel,and a cam on the drill-holder, adapted to actuate said pawl,substantially as specified.

4. The combination, with the frame and the drill-holder, of a camcarried by the drillholder, a pawl, a rock-shaft carrying the pawl, andan arm on the rock-shaft, actuated by engagement of the cam,substantially as specified.

5. The combination, with the frame and the drill-holder, of thescrew-shaft connected with the drill-holder by a swivel-connection, aratchet-wheel on the screwshaft, and apawl engaging the ratchet-wheeland actuated by the movement of the cam, as set forth.

6. The combination, with the frame and the drill-holder, of the screw-shaft connected with the drill-holder by a swivel connection, aratchet-wheel having screw engagement with the screw-shaft, arock-shaft, an arm on one end thereof engaging the cam, and a pawl onthe other end engaging the ratchet-wheel, as set forth. I

'7. The combination, withthe screw-shaft having longitudinal slot, ofthe cross-bars A, a pin thereon, engaging the said said slot, and aratchet-wheel having screw engagement with the shaft, substantially asspecified.

8. The combination, with the frame, the drill-holder, and thebevel-pinion thereon and carrying a cam, of the screw-shaft, theratchetwheel thereon and movable relatively to the length thereof, theoperating mechanism for said bevel-pinion, the rock-shaft, the armsthereon, and the pawl carried by one of the said arms, substantially asspecified.

9. The combination, with the frame and the drill-holder, of the uprightframe pivoted to the support of the drill-holder, the toggleconnectionbetween the uprightand horizon tal frames, and the hooked arms carriedby the horizontal frame, substantially as specified.

10. The combination, with the horizontal frame, of the drill-holder, theuprights pivoted to the horizontal frame, the shaft and pinions carriedby the said uprights, the bevel-pinion on the drill-holder, and thetoggle-connection between the uprights and the frame, substantially asspecified.

11. The combination, with the frame and the drill-holder and thebevel-pinion thereon, of the washer and the cross-stay rod bearingagainst. said washer, substantially as specified.

12. The combination, with the base-plate, the frame 0 thereon, and thedrill-holder and screw-shaft connected by a swivel-connection, of theratchet-wheel having screw engagement with the screw-shaft, thebevel-pinion and cam on the drill-holder, the rockshaft, the armsthereon, the pawl carried by one of said arms, and the operating devicesfor the said bevel-pinion, substantially as shown and described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

AARON R. PAULUS.

Witnesses:

II. (3. STODDARD, J. B. WALLACE.

ICC

